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37
Table 8 — Menu Structure* (cont)
LEGEND
* Table 8 illustrates the complete hierarchy. Your menu parameters
may be different depending on your configuration. For example if
you do not have a DCV (CO
2
) sensor, then none of the DCV param-
eters appear.
† When values are displayed, pressing and holding the
or
but-
ton causes the display to automatically increment.
** N/A = Not Applicable.
†† ERV Operation: When in cooling mode AND the conditions are
NOT OK for economizing - the ERV terminal will be energized. In
the Heating mode, the ERV terminal will be energized when the OA
is below the ERV OAT setpoint in the setpoint menu.
NOTES:
1. STATUS —> OCCUPIED — The factory-standard Occupancy
signal originates with a thermostat or other controller call for
indoor fan operation at UCB terminal G. This signal passes
through the Unit Control Board
’
s OCCUPANCY jumper to the
ECONO connector and to the W7220
’
s OCC input terminal. An
external timeclock or relay is re
q
uired to implement an Occu-
pancy schedule on the economizer damper position.
2. STATUS —> MA TEMP, SETPOINTS —> MAT SET — The
W7220 menu parameters and la
b
els include designations MA,
MAT and Mixed Air for the economizer cooling control sensor. On
these rooftop units, the economizer control sensor is located
downstream of the evaporator/indoor coil in the supply fan sec-
tion where this sensor is designated as Supply Air Temperature
(SAT) sensor.
3. SETPOINTS —> DRYBLB SET — This point is not displayed if a
Return Air (differential) temperature sensor or an Outdoor Air
enthalpy sensor is connected.
4. SYSTEM SETUP parameters must
b
e configured as noted for 2-
Speed unit operation:
EQUIPMENT = CONV
AUX2 I = W
FAN SPEED = 2SPEED
For damper minimum position settings and checkout menu
readings, see Table 9.
MENU
PARAMETER
PARAMETER
DEFAULT
VALUE
PARAMETER
RANGE AND
INCREMENT
†
NOTES
ALARMS
(CONT)
SHUTDOWN ACTIVE
N/A
N/A
AUX2 IN is programmed for SHUTDOWN and 24 V has
b
een applied to
AUX2 IN terminal.
DMP CAL RUNNING
N/A
N/A
DAMPER CALIBRATION ROUTINE RUNNING
If DCV Auto ena
b
le has
b
een programmed, when the W7220 is complet-
ing a cali
b
ration on the dampers, this alarm will display. Wait until the cali-
b
ration is completed and the alarm will go away. Must have OA, MA and
RA sensors for DCV cali
b
ration; set up in the Advanced setup menu.
DA SENS ALM
N/A
N/A
DISCHARGE AIR TEMPERATURE SENSOR ALARM
Discharge air temperature is out of the range set in the ADVANCED
SETUP Menu. Check the temperature of the discharge air.
SYS ALARM
N/A
N/A
When AUX1-O is set to SYS and there is any alarm (e.g., failed sensors,
etc.), the AUX1-O terminal has 24 Vac out.
ACT UNDER V
N/A
N/A
ACTUATOR VOLTAGE LOW
Voltage received
b
y actuator is
b
elow expected range.
ACT OVER V
N/A
N/A
ACTUATOR VOLTAGE HIGH
Voltage received
b
y actuator is a
b
ove expected range.
ACT STALLED
N/A
N/A
ACTUATOR STALLED
Actuator stopped
b
efore achieving commanded position.
CLO
—
Compressor Lockout
ERV
—
Energy Recovery Ventilator
LCD
—
Li
q
uid Crystal Display
MA
—
Mixed Air
MAT
—
Mixed Air Temperature
N/A
—
Not Applica
b
le
OA
—
Outdoor Air
OAT
—
Outdoor Air Temperature
OCC
—
Occupied
RA
—
Return Air
RAT
—
Return Air Temperature
RTU
—
Rooftop Unit
SYS
—
System
Table 9 — Damper Minimum Position Settings and Readings on Checkout Menu
DEMAND CONTROLLED
VENTILATION
(CO
2
SENSOR)
SETPOINTS
FAN SPEED
CHECKOUT
NO
MIN POS
1
VMAX–HS
N/A
1
N/A
MIN POS H
2
VMAX–HS
MIN POS L
2
VMAX–LS
YES
VENT MIN
1
VMAX–HS
VENT MAX
1
VMAX–HS
VENT MIN H
2
VMAX–HS
VENT MAX H
2
VMAX–LS
VENT MIN L
2
N/A
VENT MAX L
2
N/A
Summary of Contents for 50KC*A/B0 Series
Page 4: ...4 Fig 2 Dimensional Drawing...
Page 5: ...5 Fig 2 Unit Dimensional Drawing cont...
Page 22: ...22 Fig 38 Electro Mechanical Control Wiring Diagram...
Page 23: ...23 Fig 39 Electro Mechanical Control Wiring Diagram with Humidi MiZer System...
Page 24: ...24 Fig 40 Electro Mechanical Power Wiring...
Page 25: ...25 Fig 41 PremierLink Wiring Schematic...
Page 26: ...26 Fig 42 PremierLink Wiring Schematic with Humidi MiZer System...
Page 27: ...27 Fig 43 RTU Open System Control Wiring Diagram...
Page 28: ...28 Fig 44 RTU Open System Control Wiring Diagram with Humidi MiZer System...
Page 43: ...43 Fig 57 TXV Metering Device Position in Reheat Coil Typical Diagram for Sizes 04 06 TXV...
Page 44: ......
Page 45: ......